I don't think the points are going to change all that much. Looking at Space Marine Tac Squad, as GW seems to view these as the baseline for everything else. That and I could only find the following information quickly. RESEARCH!!
A Tactical Marines squad (w/10 men, Veteran Sergeant, flamer and missile launcher) with a dedicated Rhino (basic nothing fancy) is currently 205 points. Now compared to editions back to 4th here, (Space Marine Point Costs Over 3 Editions | Wargaming Hub
) the only change is 4th to 5th edition.
The average cost for the humble tactical squad has changed very little. What did change, however, were the options of putting them together. For comparing point costs, I used a 10-man tactical squad with veteran sergeant, a flamer, a missile launcher and a no-frills Rhino.
4th Edition Codex Dark Angels: 215 points
Tactical Marines in the 4th Edition Codex, even with the mentioned options, weren’t that much more expensive. What they lacked, however, was flexibility in the build. You could only pick a basic 5-man squad (with the veteran sergeant) or a full 10-man squad. There were no discounts on special or heavy weapons, making these 10 points extra.
5th Edition Codex Space Marines: 205 points
5 Tactical Marines with veteran sergeant in 5th Edition cost the same as in 4th Edition. Every added Space Marine, however, actually became a point more expansive! In return, one could now add single Marines on top of the basic 5, allowing oddly numbered units of 7 or 9 Space Marines. Moreover, special and heavy weapons became 5 to 10 points cheaper across the board, making some even free for units of a certain size.
6th Edition Codex Dark Angels: 205 points
6th Edition seems to have embraced flexibility above all. As seen, the cost for a basic unit like this is identical to 5th Edition. However, where 5th Edition was a “package-deal” with a veteran sergeant and “free” weapons, the 6th Edition unit is build from a bare-bones unit of 14 pt. Space Marines. However, all options (incl. the veteran sergeant) cost extra. Special and heavy weapons returned to 4th Edition costs (or more in case of the missile launcher).
So, it looks unlikely that point changes are a big thing, as GW hasn't changed them much over the years. However, I would think that what changes they implement will be minor balancing to newer factions/units, Knights, Mechanicus, Guilliman, Chaos.